Scuba Tanks/Fill stations

My team is looking to buy a scuba tank and fill our own tanks during practice at our field. What PSI does a tank have to be to fill up a tank? We aren't talking a 5 foot bulk tank but just a smaller tank used for scuba diving. Any information would be good if anyone has or had a scuba tank for fills.

Whatever PSI that is in the scuba tank will be the PSI that is put into your tank. I have 2 of them, one is a 100 cubic foot 3300psi tank, the other is a 80 cubic foot 3k tank. The 80 cubic feet tanks seem to be more common around here.